CVE-2021-1495

Multiple Cisco Products Snort HTTP Detection Engine File Policy Bypass Vulnerability

Description

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of specific HTTP header parameters. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass a configured file policy for HTTP packets and deliver a malicious payload.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Vendor Advisory cisco.com Vendor Advisory debian.org
Affected: Cisco Cisco Firepower Threat Defense Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-http-fp-bp-KfDdcQhc vendor advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html mailing list
https://www.debian.org/security/2023/dsa-5354 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-1495?
CVE-2021-1495 has been scored as a medium severity vulnerability.
How to fix CVE-2021-1495?
To fix CVE-2021-1495, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-1495 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-1495 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-1495?
CVE-2021-1495 affects Cisco Cisco Firepower Threat Defense Software.
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